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Kimi K2.5

Moonshot AI · 2026-01-27 · 1T parameters

Kimi K2.5 is Moonshot AI's open-weight trillion-parameter MoE model with 32B active parameters, released January 2026. It extends Kimi K2 through continued pretraining on approximately 15 trillion mixed visual and text tokens, adding multimodal reasoning for text, image, and video inputs and Agent Swarm capabilities for coordinated multi-agent task execution.

Benchmark scores

BenchmarkScore
AA-LCR65.3
AA-LCR v1.178.0
AA-Omniscience Index-7.3
Agent Red Teaming k=100 (CAIS)90.9
AIME 2024 (avg@8)97.5
AIME 2024-202595.6
AIME 2025 (avg@8)93.8
AIME 2025 (MathArena repeated-run mean)95.8
AIME 202695.8
ALE-Bench1279
Antidote: Everyday Edition1006
Apex (MathArena)8.8
Apex Shortlist57.5
APEX-Agents-AA (avg@3)11.5
APEX-SWE30.3
ARC-AGI-1 Semi-Private65.3
ARC-AGI-211.8
Arena Code WebDev — Brand & Marketing1455
Arena Code WebDev — Consumer Product1437
Arena Code WebDev — Content Creation Tools1430
Arena Code WebDev — Data & Analytics1424
Arena Code WebDev — Frontend1435
Arena Code WebDev — Fullstack1496
Arena Code WebDev — Gaming1427
Arena Code WebDev — HTML1427
Arena Code WebDev — React1429
Arena Code WebDev — Reference-Based Design1441
Arena Code WebDev — Simulations1427
Arena Document (Style Controlled)1436
Arena Image-to-WebDev1439
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